Answer:
The correct answer is option D. renal pyramid.
Explanation:
Kidney has different parts that help together for urine formation and filtration. The renal papilla is the site where renal pyramids flush urine into the minor calyx in the kidney. It is the part of the cone-shaped tissue of the kidney called a renal pyramid.
The broad base of every and each pyramid faces the papilla, points internally towards the pelvis in the kidney. The apex terminates at the papilla of the renal pyramid.
Thus, the correct answer is option D. renal pyramid.